Measurement of exclusive gamma gamma -> l(+)l(-) production in proton-proton collisions at root s=7 TeV with the ATLAS detector
(2015) In Physics Letters. Section B: Nuclear, Elementary Particle and High-Energy Physics 749. p.242-261- Abstract
- This Letter reports a measurement of the exclusive gamma gamma -> l(+)l(-) (l = e, mu) cross-section in proton-proton collisions at a centre-of-mass energy of 7 TeV by the ATLAS experiment at the LHC, based on an integrated luminosity of 4.6 fb(-1). For the electron or muon pairs satisfying exclusive selection criteria, a fit to the dilepton acoplanarity distribution is used to extract the fiducial cross-sections. The cross-section in the electron channel is determined to be sigma(excl)(gamma gamma -> e+e-) = 0.428 +/- 0.035 (stat.) +/- 0.018 (syst.) pbfor a phase-space region with invariant mass of the electron pairs greater than 24GeV, in which both electrons have transverse momentum p(T) > 12 GeV and pseudorapidity vertical bar... (More)
- This Letter reports a measurement of the exclusive gamma gamma -> l(+)l(-) (l = e, mu) cross-section in proton-proton collisions at a centre-of-mass energy of 7 TeV by the ATLAS experiment at the LHC, based on an integrated luminosity of 4.6 fb(-1). For the electron or muon pairs satisfying exclusive selection criteria, a fit to the dilepton acoplanarity distribution is used to extract the fiducial cross-sections. The cross-section in the electron channel is determined to be sigma(excl)(gamma gamma -> e+e-) = 0.428 +/- 0.035 (stat.) +/- 0.018 (syst.) pbfor a phase-space region with invariant mass of the electron pairs greater than 24GeV, in which both electrons have transverse momentum p(T) > 12 GeV and pseudorapidity vertical bar eta vertical bar < 2.4. For muon pairs with invariant mass greater than 20GeV, muon transverse momentum pT> 10 GeV and pseudorapidity vertical bar eta vertical bar < 2.4, the cross-section is determined to be sigma(excl)(gamma gamma -> mu+mu-) = 0.628 +/- 0.032(stat.) +/- 0.021 (syst.) pb. When proton absorptive effects due to the finite size of the proton are taken into account in the theory calculation, the measured cross-sections are found to be consistent with the theory prediction. (C) 2015 CERN for the benefit of the ATLAS Collaboration. Published by Elsevier B.V. (Less)
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https://lup.lub.lu.se/record/8371709
- author
- Aad, G.
; Abdallah, J.
; Abdinov, O.
; Aben, R.
; Abolins, M.
; AbouZeid, O. S.
; Abramowicz, H.
; Abreu, H.
; Abreu, R.
; Abulaiti, Y.
; Acharya, B. S.
; Adamczyk, L.
; Adams, D. L.
; Adelman, J.
; Adomeit, S.
; Adye, T.
; Affolder, A. A.
; Agatonovic-Jovin, T.
; Agricola, J.
; Aguilar-Saavedra, J. A.
; Ahlen, S. P.
; Ahmadov, F.
; Aielli, G.
; Akerstedt, H.
; Åkesson, Torsten
LU
; Akimov, A. V.
; Alberghi, G. L.
; Albert, J.
; Albrand, S.
; Verzini, M. J. Alconada
; Aleksa, M.
; Aleksandrov, I. N.
; Alexa, C.
; Alexander, G.
; Alexopoulos, T.
; Alhroob, M.
; Alimonti, G.
; Alio, L.
; Bocchetta, Simona
LU
; Bryngemark, Lene
LU
; Doglioni, Caterina
LU
; Floderus, Anders
LU
; Hawkins, Anthony
LU
; Hedberg, Vincent
LU
; Ivarsson, Jenny
LU
; Jarlskog, Göran
LU
; Lytken, Else
LU
; Mjörnmark, Ulf
LU
; Smirnova, Oxana
LU
; Viazlo, Oleksandr
LU
and Zwalinski, L
(Less) - author collaboration
- organization
- publishing date
- 2015
- type
- Contribution to journal
- publication status
- published
- subject
- in
- Physics Letters. Section B: Nuclear, Elementary Particle and High-Energy Physics
- volume
- 749
- pages
- 242 - 261
- publisher
- Elsevier
- external identifiers
-
- wos:000361562900035
- scopus:85040597160
- ISSN
- 0370-2693
- DOI
- 10.1016/j.physletb.2015.07.069
- language
- English
- LU publication?
- yes
- id
- 089d9dda-7801-4e76-9d64-bba21cecc456 (old id 8371709)
- date added to LUP
- 2016-04-01 14:55:51
- date last changed
- 2024-01-31 09:23:40
@article{089d9dda-7801-4e76-9d64-bba21cecc456,
abstract = {{This Letter reports a measurement of the exclusive gamma gamma -> l(+)l(-) (l = e, mu) cross-section in proton-proton collisions at a centre-of-mass energy of 7 TeV by the ATLAS experiment at the LHC, based on an integrated luminosity of 4.6 fb(-1). For the electron or muon pairs satisfying exclusive selection criteria, a fit to the dilepton acoplanarity distribution is used to extract the fiducial cross-sections. The cross-section in the electron channel is determined to be sigma(excl)(gamma gamma -> e+e-) = 0.428 +/- 0.035 (stat.) +/- 0.018 (syst.) pbfor a phase-space region with invariant mass of the electron pairs greater than 24GeV, in which both electrons have transverse momentum p(T) > 12 GeV and pseudorapidity vertical bar eta vertical bar < 2.4. For muon pairs with invariant mass greater than 20GeV, muon transverse momentum pT> 10 GeV and pseudorapidity vertical bar eta vertical bar < 2.4, the cross-section is determined to be sigma(excl)(gamma gamma -> mu+mu-) = 0.628 +/- 0.032(stat.) +/- 0.021 (syst.) pb. When proton absorptive effects due to the finite size of the proton are taken into account in the theory calculation, the measured cross-sections are found to be consistent with the theory prediction. (C) 2015 CERN for the benefit of the ATLAS Collaboration. Published by Elsevier B.V.}},
author = {{Aad, G. and Abdallah, J. and Abdinov, O. and Aben, R. and Abolins, M. and AbouZeid, O. S. and Abramowicz, H. and Abreu, H. and Abreu, R. and Abulaiti, Y. and Acharya, B. S. and Adamczyk, L. and Adams, D. L. and Adelman, J. and Adomeit, S. and Adye, T. and Affolder, A. A. and Agatonovic-Jovin, T. and Agricola, J. and Aguilar-Saavedra, J. A. and Ahlen, S. P. and Ahmadov, F. and Aielli, G. and Akerstedt, H. and Åkesson, Torsten and Akimov, A. V. and Alberghi, G. L. and Albert, J. and Albrand, S. and Verzini, M. J. Alconada and Aleksa, M. and Aleksandrov, I. N. and Alexa, C. and Alexander, G. and Alexopoulos, T. and Alhroob, M. and Alimonti, G. and Alio, L. and Bocchetta, Simona and Bryngemark, Lene and Doglioni, Caterina and Floderus, Anders and Hawkins, Anthony and Hedberg, Vincent and Ivarsson, Jenny and Jarlskog, Göran and Lytken, Else and Mjörnmark, Ulf and Smirnova, Oxana and Viazlo, Oleksandr and Zwalinski, L}},
issn = {{0370-2693}},
language = {{eng}},
pages = {{242--261}},
publisher = {{Elsevier}},
series = {{Physics Letters. Section B: Nuclear, Elementary Particle and High-Energy Physics}},
title = {{Measurement of exclusive gamma gamma -> l(+)l(-) production in proton-proton collisions at root s=7 TeV with the ATLAS detector}},
url = {{http://dx.doi.org/10.1016/j.physletb.2015.07.069}},
doi = {{10.1016/j.physletb.2015.07.069}},
volume = {{749}},
year = {{2015}},
}